Morphology of polyamide 6-polybutadiene multiblock copolymers
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The morphology of polyamide 6-polybutadiene multiblock copolymers, commonly used for reaction injection moulding, have been investigated using transmission electron microscopy, dynamic mechanical techniques, calorimetry and wide angle X-ray diffraction. Phase separation is found to be almost complete and the crystallization of the PA6 blocks is slightly higher than in pure PA6. The morphology shows similarities to what has been reported for segmented polyether-esters. The PA6 lamellar dimensions found in the micrographs agree with dimensions calculated from melting point depression and X-ray data.
KeywordsPolymer Electron Microscopy Crystallization Transmission Electron Microscopy Depression
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